Lessons from the B0,+ → K0,+ μ+μ− angular analyses

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Lessons from the B0,+ → K0,+ μ+μ− angular analyses

Ciuchini, Marco; Fedele, Marco; Franco, Enrico; Paul, Ayan; Silvestrini, Luca; Valli, Mauro

Physical review. D, 01/2021, Volume: 103, Issue: 1

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We perform an analysis within the Standard Model of B0,+→K*0,+μ+μ− decays in light of the recent measurements from the LHCb experiment, showing that new data strengthen the need for sizable hadronic contributions and correlations among them. We then extend our analysis to new physics via the Standard Model effective theory, and carry out a state-of-the-art fit of available b → sℓ+ℓ− data, including possible hadronic contributions. We find the case of a fully left-handed operator standing out as the simplest scenario with a significance of almost 6σ.

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